How fast does 30% h2o2 go bad after opening it? Swim ran a pbenzo from hydro via h2o2 synth today and made quinhydrone yet everything was the exact same way as prescribed by bond Post 473279 (https://www.thevespiary.org/talk/index.php?topic=9868.msg47327900#msg47327900)
(Bond_DoubleBond: "Big Breakthrough for Benzo Bees", Methods Discourse)
Worked before except this time when the h2o2 was added in the addition funnel, bubbles on the walls of the funnel were not observed as usual. Swim guess the bottle is about 3 weeks old after being opened and has been closed for those weeks. Also this brand and bottle of h2o2 worked before.